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[ALSA] hda-intel - Automatic correction to single_cmd mode

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Modules: HDA Codec driver,HDA Intel driver

Switch to single_cmd mode automatically as a fallback when CORB/RIRB
communication doesn't work well.  It may make the driver working on
some devices with broken BIOS/ACPI support.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai
2006-02-16 18:17:58 +01:00
committed by Jaroslav Kysela
parent 353b9e6670
commit 111d3af5f5
2 changed files with 49 additions and 17 deletions
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6
sound/pci/hda/hda_codec.c
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@ -531,6 +531,12 @@ int snd_hda_codec_new(struct hda_bus *bus, unsigned int codec_addr,
bus->caddr_tbl[codec_addr] = codec;
codec->vendor_id = snd_hda_param_read(codec, AC_NODE_ROOT, AC_PAR_VENDOR_ID);
if (codec->vendor_id == -1)
/* read again, hopefully the access method was corrected
* in the last read...
*/
codec->vendor_id = snd_hda_param_read(codec, AC_NODE_ROOT,
AC_PAR_VENDOR_ID);
codec->subsystem_id = snd_hda_param_read(codec, AC_NODE_ROOT, AC_PAR_SUBSYSTEM_ID);
codec->revision_id = snd_hda_param_read(codec, AC_NODE_ROOT, AC_PAR_REV_ID);